<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>

</head>

<body>
	<div id="myDiv" data-appId='fadsf' data-myname='yousi'></div>
    <script>
    	var div=document.getElementById('myDiv');
		
		//取得自定义属性的值
		console.log(div.dataset.appId);
		console.log(div.dataset.myname);
		
		//设置值
		div.dataset.appId='888';
		div.dataset.myname='xiaoming';
		if(div.dataset.myname){
			console.log(div.dataset.myname);
		}
    </script>
    
</body>
</html>
